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Graphene Oxide-Supported Three-Dimensional Cobalt–Nickel Bimetallic Sponge-Mediated Peroxymonosulfate Activation for Phenol Degradation
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-10-29 , DOI: 10.1021/acsestengg.1c00307 Xinyue Liu 1 , Haoran Yu 1 , Jiahui Ji 1 , Zhuan Chen 1 , Maoxi Ran 1, 2 , Jinlong Zhang 1, 2, 3 , Mingyang Xing 1, 2, 3
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-10-29 , DOI: 10.1021/acsestengg.1c00307 Xinyue Liu 1 , Haoran Yu 1 , Jiahui Ji 1 , Zhuan Chen 1 , Maoxi Ran 1, 2 , Jinlong Zhang 1, 2, 3 , Mingyang Xing 1, 2, 3
Affiliation
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Advanced oxidation processes (AOPs) based on peroxymonosulfate (PMS) have been effective techniques for wastewater treatment. However, the recovery of powder catalysts and their granulation are limiting the application of heterogeneous AOPs technology. To tackle these issues, recoverable graphene oxide-based three-dimensional (3D) cobalt–nickel bimetallic sponges (SCNGs) were synthesized via a simple dipping process. Thermogravimetric analysis confirmed that the bimetal content of SCNGs was only 7.7%. The SCNGs/PMS system was proved to be greatly effective to treat various organic pollutants, achieving over 71% and 94% of degradation efficiency for phenolic substances (phenol and 4-chlorophenol) and antibiotics (tetracycline and sulfadiazine) in 5 min over a wide initial pH range of 4.0–9.0, respectively. The correlative quenching experiments and electronic paramagnetic resonance tests verified the existence of multiple reactive oxygen species (1O2, SO4•–, HO•, and O2•–), whereas 1O2 that originated from PMS self-decomposition and O2•– conversion played the most important role in the degradation processes. Overall, this study provides a prospect for the industrial application of 3D bimetallic materials based on PMS activation in wastewater treatment.
中文翻译：
氧化石墨烯负载的三维钴镍双金属海绵介导过硫酸盐活化对苯酚的降解
基于过硫酸盐 (PMS) 的高级氧化工艺 (AOP) 已成为废水处理的有效技术。然而，粉末催化剂的回收及其造粒限制了非均相 AOP 技术的应用。为了解决这些问题，通过简单的浸渍工艺合成了基于可回收氧化石墨烯的三维（3D）钴镍双金属海绵（SCNG）。热重分析证实，SCNGs 的双金属含量仅为 7.7%。SCNGs/PMS系统被证明对处理各种有机污染物非常有效，在5分钟内对酚类物质（苯酚和4-氯苯酚）和抗生素（四环素和磺胺嘧啶）的降解效率分别达到71%和94%以上。初始 pH 值范围分别为 4.0-9.0。1 O 2、SO 4 •–、HO •和O 2 •– )，而源自PMS 自分解和O 2 •–转化的1 O 2在降解过程中发挥了最重要的作用。总体而言，该研究为基于 PMS 活化的 3D 双金属材料在废水处理中的工业应用提供了前景。
更新日期：2021-12-10
中文翻译：
氧化石墨烯负载的三维钴镍双金属海绵介导过硫酸盐活化对苯酚的降解
基于过硫酸盐 (PMS) 的高级氧化工艺 (AOP) 已成为废水处理的有效技术。然而，粉末催化剂的回收及其造粒限制了非均相 AOP 技术的应用。为了解决这些问题，通过简单的浸渍工艺合成了基于可回收氧化石墨烯的三维（3D）钴镍双金属海绵（SCNG）。热重分析证实，SCNGs 的双金属含量仅为 7.7%。SCNGs/PMS系统被证明对处理各种有机污染物非常有效，在5分钟内对酚类物质（苯酚和4-氯苯酚）和抗生素（四环素和磺胺嘧啶）的降解效率分别达到71%和94%以上。初始 pH 值范围分别为 4.0-9.0。1 O 2、SO 4 •–、HO •和O 2 •– )，而源自PMS 自分解和O 2 •–转化的1 O 2在降解过程中发挥了最重要的作用。总体而言，该研究为基于 PMS 活化的 3D 双金属材料在废水处理中的工业应用提供了前景。
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